Wrench.



H. W. MOAK.

` WRENCH. APPLICATION FILED SERT. 9, 1912.

1,064,361. 4 Patented June10,1913.

EEE-Tel- El::r l

UNITED STATESv PATENT HERBERT w. Moni;- on onnoivmajivnw YORK.

WRENCH.

Application mea september 9,19'12. seriai No. 71,4o9. i

Specification of Letters latent;

PatentedJuIie 10,1913.

To all whom t may concern.'

Be it known that I, l-InnnirrA W. Monk, a citizen of the United States, residing at Oneonta, in the county of Otsego and State of New York, have invented certain newreadily and quickly adjusted to -any desired position.

Another object of the invention is the provision of a monkey wrenchv embodying a movable jaw which has connected thereto a rack bar .movable in a slot forme'dwithin, the wrench shank and a collar mounted upon the stem of the shank and provided with pawls for engagement with the rack bar whereby the movable jaw may be adjusted to any desired position.

A further object of the invention is the provision of a wrench of the above stated character comprising a movable jaw provided with a pair of rack bars, a collar slidably mounted upon the stem lof the ratchet shank and provided with pawls for engagement with the rack bars, and an adjustable feriule threadedly mounted upon the stem whereby an additional or finer adjustment may be had after the movable jaw has once been set in adjusted position by moving the collar longitudinally of the stem. A still further object of the invention is the provision of a wrench ofthe above stated character, the movable jaw of which is provided with a pair of rack bars arranged on. opposite sides of the wrench shank and movable in longitudinal grooves, the teeth of one rack bar being finer or smaller than those of the other, whereby either one or both of the pawls carried by the collar will. positively engage one of the rack bars. I

A' stil'l further object of the invention is the provision of a wrench of the above stated character which will be cheap and inexpensive to manufacture, durableand substantial in design and one which can be readily manipulated to adjust the same to any' desired position. j VViththese and other objects in view as will appear as the description proceeds, the invention comprises. the various novel features of construction, combination and ardescribed hereinafter -and set forth lwith particularity lin the appended claims.

Referring to' e drawings Figurel is a side elevation of my improvedwrench; Fig.

2 is a longitudinal sectional View taken on t-he line 2-2 of Fig. 1; Fig.. 3 isa section t-aken on the line 3% of Fig.- 2'; and Fig. 4 is a detail view of a mdied form of stationary and movable wrench jaws. 5

Referring more particularly tothe draw ings, the .numeral 1 indicates the stationary' jaw of my improved wrench; and 2 the shank 'thereof which is provided at ,its opposite end with a suitable handle', which latter is securely held upon the reduced end orthe stem 4 of the shank 2 through the' medium of a nut 5, threadedly connected to the lower end of the stem. The shank 2-is provided in its opposite side faces with longitudinally extending grooves 6 in which are arranged for sliding movement, therack bars 7 and 8, the teeth of the rack bar8 being finer or smaller than those of the b ar 7 for a purpose that will presentlyl appear.

A movable jaw 9 is slidably mounted upon the shank 2 of the wrench and has connected thereto the `rack bars 7 and 8 through the medium of pinsor'screws 10.

The stem 4 'of the shank has slidably ar' ranged thereon a collar 11 which carries a pair of pawls 12 and 13 adapted to engage the rack bars'?l and 8 to hold'the latter together with the movable jaw in any desired adjusted position. This collar 11, as clearly shown in Fig. 3 of the drawings, is provided centrally with opposing recesses 14 into which slidably tits the shank 2` so that the collar will be *preventedl against radial movement upon the shank. end portions of the collar arc provided with recesses 15 in which are pivotally mounted the pawls 12 and 13 respectively.t Theserv` pawls are pivoted intermediate of their ends as lat 1 6 and are provided at their upper ends with thumbengaging and lateral projections 17 and have their Alower ends bent laterally to'provide offset portions 18 which The opposite 4rangement of partsas will be more fullyl fmally are adapted to support the lower ends ot the leaf springs 19. These springs 19, in this instance, are shown to be composed of two leaves secured together at their lower ends and bowed outwardly at their upper ends to'provide forked or bifurcated upper spring ends. As clearly shown, the outer ends of the springs 19 bear against the pvawls beyond their pivot and against the adjacent side wall or' the recesses l5. From this construction it will be apparent that the movable jaw may be adjusted longitudinally upon the shank of the wrench whereby either one or both of the pawls will post tively engage one or both of the rack bars for holding 'the movable jaw in the desired adjusted posit-ion.

The outer end portion of the stem 4 is threaded for a short distance as shown at Q0 and has arranged thereon an adjustable ferrule 21 which latter, as shown, in Figs. 1 and-2 of the drawings, is arranged below and adapted to support the collar 11. After the movable jaw hasbeen adjusted to position and it is found that a lstill further adjustment might lie-had, the ferrule 21 is revolved or screwed upon the stem 4 so as to cause the collar 11, rigidly connected with the rack bars of the movable jaw, to move upwardly upon the stem to secure this desired additional finer adjustment. As shown in Fig. 1, stop shoulders 22 are formed by the reducing of the shank Q to form the stem 4t. These stop shoulders QQ serve to limit. the upward movement o'l''the collar 1.1.

In the operation of the wrench, the adjustable errule 21 normallyrests upon the outer end ofthe handle, the collar 11 norresting upon the ter-rule so that when it is desired to use the wrench, the-movable can be adjusted longitudinally of the i so as to cause shank to the desired position when, if found necessary, a further adjustment may be had by screwing the errule up upon the same the collanll to move outwardly carrying the rack bars and the movable jaw connected thereto.

In F ig. 4 is shown a modiied form of the wrench in which the stationary jaw 1 is provided in its active face with teeth 23. The inner' or movable jaw is also provided with teeth. 23, which together with those of the stationary jaw serve to iirmly grip and en gage a pipe when it is desired to turn the same. This construction as shown in Fig. 4f, provides a very etlicient and durable pipe wrench.- However, I desire it to be understood that I am not limited to the exact form and design above described, but that minor changes in the construction may be madewhen desired. l

Having thus described the invention, what .is claimed is:

1. A wrench comprising a shank provided with a stationary jaw on one end and a handle on the other end thereof. a movable jaw mounted upon the shank and provided shan k inwardly of .bar being smaller than Lose-,sei

with rack bars, a collar being termed with recesses mounted upon the shank, and )ring pressed pawls disposedl in the rec in said collar and adapted to engage said rack bars to hold the movable jaw in adjusted position. l

Q. .k wrench comprising a shank formed with a stationary jaw on one end and a handle on the opposite end, a movable jaw mounted thereon, rack bars carried by said jaw, a collar mounted upon the shank. means arried by the collar adapted 'to engage'said rack bars to hold the movable jaw in an ad justed position, and means disposed on said said collar 'for adjusting said collar longitudinally of the shank to secure additional adjustment of the movable jaw.

3. A wrench comprising a s rank provided on o-ne end with a stationary jaw and a handle upon the opposite end, a movable jaw ried by the movable jaw, a collar mounted upon the shank, means carried by the collar adapted to engage said rack bars, and an adjusting errule mounted upon the shank inward of said collar.

Il. A wrench comprising a shank provided at one end witha stationary jaw, and a handle. at the opposite end, a movable jaw mounted upon t-he shank, rack bars carried mounted on the shank, rack bars earby the movable jaw, the teeth otoue rack those of the other, a

and pawls earwith said bar being smaller than collar carried by the shank, ried by the collar for engagement rack bars.

5. A wrench comprising a shank having a stationary jaw at one the opposite end, said shank being pron vided in its opposite side faces with longitudinal grooves, a movable jaw arranged upon the shank, rack bars secured to the movable jaw `and, disposed in said grooves for sliding movement, the teeth of one rack those oi the other, a collar arranged upon the shank, and pawls carried by said collar and adapted to engage said rack bars. I

6. A wrench comprising a shank provided at one end with a stationary jaw and a handle at the opposite end, a movable aw mounted upon the shank, rack bars carried by the movable jaw, the teeth of one bar being smaller than those ot the other, a collar carried by the shank, pawls carried by end and a handle at the collar ard adapted to engage said rack bars,'and a the shank inward oi the collar for adjustinn` thelatter longitudinally of the shank.

7. A wrench comprising a shank provided at one end with a stationary jaw reduced at its opposite end to provide a stem, a handle mounted upon said stem, said shank being errule adjustably connected to.

provided in its opposite longitudinal Vfaces with grooves, a movable `coll 1' arranged upon the shank, rack bars carried by the movable jaw and disposed Wit-hin lsaid 5 grooves for longitudinal movement, the teeth of one'l rack bar being smaller than those of the other, a collar mounted-upon the stem of the shank for longitudinal adjustment thereon, and a errule threadedly' 10 mounted upon the stein inward of the co1- lar for adjusting the latter longitudinally HERBERT W. MoAK.

Witnesses:

BERT HOYE,A R. E.IBRIGHAM.

Cogies of this patent may be obtainetor five cents each, by addressing the Commissioner of Patenti,

` Washingto 11, D. C. 

